I have Bosch headlights in my station sedan and have had trouble trying to source original globes.
I did buy Halogen bulbs from
http://classicandvintagebulbs.com but they are alot brighter being 60/55 watt and were also quite expensive.
The other day I found the right globes surfing the net which are 12v 45/40 watt with a Ba 20d base.
These came from
http://www.naauto.biz insert ba1245 into the search area.
They are the right ones, are the right shape and work perfectly
I can happily recommend their service and they have alot of other auto electrical gear.
Hope this may help anyone looking for the proper Bosch headlight globe.
Cheers Stewy